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Morphometric Characterization and Preliminary Heritability Estimates of Body Measurements in the Polish Konik Populations. The objective of this paper is to demonstrate the morphometric diversity of 172 Polish Koniks from the largest Polish breeding centers and to assess their genetic diversity by estimating the effective population size () and heritabilities () of the studied traits. The animals were bred under a stable housing system. Horses of both sexes aged 3 to 24 years were analyzed. Each horse was characterized with 40 metric traits. Multifactorial analyses (PCA, DA) and the REML method were applied to reveal the exterior differentiation and the development of distinct morphometric types. The findings esta...
Overview of the Current Osteoarthritis Treatment in Veterinary Medicine and Future Directions. Osteoarthritis (OA) is a chronic and progressive joint disease that can cause permanent loss of joint function. OA is highly prevalent in horses, dogs, and cats, affecting different joints and leading to reduced mobility and chronic pain. Different risk factors for animal OA have been identified, including trauma and breed. Inflammation is a hallmark of the disease, with various underlying mechanisms such as cyclooxygenase and metalloproteinase activation, nerve growth factor, cytokine, and prostaglandin upregulation, among others. Although disease complexity makes OA difficult to treat, eno...
Delphi consensus on Thoroughbred yearling sales endoscopy in Australasia. Concerns regarding the reliability and consistency of yearling sales endoscopy in Australia and New Zealand have led to reduced industry confidence. Recent studies have clarified the relationship between yearling laryngeal function (YLF) grades and future outcomes. Objective: To build expert consensus on the most appropriate method for grading YLF, assess the clinical relevance of each grade on future race performance and prosthetic laryngoplasty risk, and develop guidelines for pre-sale endoscopic technique. Methods: Modified Delphi study. Methods: Anonymous, iterative surveys were distribute...
Relationship between the estrus duration in cyclic mares and the endometrial gene expression on day 7 post-ovulation. This study investigated the effect of estrus duration on endometrial gene expression in cyclic mares on Day 7 post-ovulation, focusing on transcripts relevant to early pregnancy: uterocalin (P19), insulin-like growth factor 1 (IGF1), fibroblast growth factor 2 (FGF2), progesterone receptor (PGR), and estrogen receptor alpha (ESR1). Twelve mares were classified according to the estrus duration in long estrus (LE, ≥ 3 days of endometrial edema; n = 7) or short estrus (SE, 0.1). ESR1 expression was undetectable in all samples. These findings suggest that prolonged estrus enhances P19 e...
Microbiome analysis reveals the positive effects of exercise on the gut microbiota in horse. Gut microbiota is vital to host health, involving many aspects including immunity, metabolism and digestion. Exercise is recognized as a significant factor influencing the gut microbiota. However, the effects of exercise on the gut microbiota in horses remain unclear. Here, this study aims to investigate the effects of exercise on the gut bacterial and fungal communities in the horses using 16S rDNA and ITS genes amplicon sequencing. Results indicated that exercise significantly increased the ACE, Chao1 and Shannon indices of the gut bacterial community, accompanied by significant alterations ...
Money, morality, and nationalism: the contested sponsorship of the Falsterbo horse show. In early 2025, the Falsterbo Horse Show entered a title sponsorship agreement with Al Shira'aa Stables in the United Arab Emirates, prompting extensive Swedish media coverage and strong public reactions. This controversy offers an opportunity to examine how sport sponsorship becomes a site for moral and geopolitical boundary-making. Drawing on a Foucauldian understanding of discourse as a meaning-making practice, the study analyses 210 Swedish newspaper articles published between February and April 2025 to explore how power/knowledge operates through language and how sponsorship is discursivel...
Terpenic compounds possess anthelmintic and immunomodulatory properties with potential for controlling equine cyathostomin infections. The emergence of anthelmintic-resistant parasite isolates necessitates alternative control strategies. The use of dietary additives with anti-parasitic or immunomodulatory activities has been proposed as a solution, but whether such additives can simultaneously exert dual bioactivities within this context has rarely been explored. Here, we evaluated whether selected terpenes could exert dual bioactivities (anti-parasitic and immunomodulatory) with a view to their use as food additives that can limit strongyle infections in horses. In vitro tests with cyathostomin larval development, larval mig...
Evidence of occipitoatlantoaxial malformations independent of the HOXD3 mutation in an Arabian horse. Occipitoatlantoaxial malformations (OAAM) are developmental disorders occurring at the occiput, atlas and axis. OAAM type 1 is a familial disorder affecting Arabian horses. Currently, a single genetic mutation in the HOXD3 gene region can be tested to confirm the diagnosis. This case describes a 3-year-old Arabian gelding affected with OAAM. Clinical examination revealed a proximal cervical deformation on the right side and severe stiffness of the neck in the sagittal plane without associated pain. Neurological examination demonstrated a generalized proprioceptive ataxia. Radiographs revealed ...
HERDA-associated variant in bull-catching (vaquejada) Brazilian Northeastern bull-catching Quarter Horses. Bull-catching (vaquejada) accounting for approximately 13% of sport horses in Brazil. Genetic screening has enabled strategies to reduce the spread of inherited disorders, including Hereditary Equine Regional Dermal Asthenia (HERDA), a major skin disease included in the Six Panel required for registration by the Brazilian Quarter Horse Breeders Association. Although the HERDA-associated variant has been extensively studied in other disciplines, it had not been evaluated in Bull-catching Quarter Horses (QH). Objective: The present study aimed to determine the allele frequency of the pathogenic ...
Genetic diversity in the Criollo Argentino horse from SNP array data. The Criollo Argentino horse is a national symbol and a heritage breed that represents both cultural identity and a key component of traditional production systems in Argentina. This study aimed to assess the genetic differentiation of the Criollo Argentino relative to other horse breeds and to infer potential factors shaping its diversity through the genomic analysis of 24 representative animals. Samples were genotyped using a medium-density SNP array containing 65,157 markers, and genetic diversity analyses were conducted across autosomal SNP sets filtered under different criteria. Contempora...
Survey of equine pasture best management practices and soil fertility in southeast Pennsylvania after the grazing season. Proper pasture management improves forage yield, reduces costs, and minimizes environmental impacts, but may be difficult in suburban settings. Objective: This study evaluated pasture condition and management practices on 28 horse farms in counties adjacent to the Philadelphia metropolitan area. Methods: Between November 2019 and January 2020, 72 pastures (2-3/farm) were assessed via soil sampling, USDA-NRCS Pasture Condition Score Sheet (PCSS), Penn State Equine Pasture Evaluation Disc (EPED), and farm manager interviews. Linear models assessed effects of management factors on pasture conditi...
Comprehensive molecular characterization of Theileria equi: Detection, genetic diversity, and risk factors assessment. Equine piroplasmosis, caused by Theileria equi, has been widely studied globally, but genetic diversity research in India remains limited. Analysis of 306 horse blood samples revealed T. equi infection in 10.78% by microscopy and 21.24% by PCR. Universal primers targeting 18S rRNA of T. equi and Babesia caballi were used, followed by species-specific primers generating 435 bp amplicons. Sequenced PCR-positive samples revealed high homology (99.52-100% in India, 95.89-100% globally), with all Indian isolates classified as genotype A. The EMA-1 gene phylogenetic analysis confirmed the insights f...
Haplotype GWAS in swedish warmblood horses for conformation and jumping traits. The aim of this study was to better understand the genomic architecture behind performance-related traits in sport horses. In this study, we conducted a haplotype-based genome-wide association study (GWAS) for 36 conformation and free jumping phenotypes recorded during routinely conducted young horse evaluation tests involving 380 Swedish Warmblood (SWB) horses. The horses were evaluated by expert judges using both traditional and linear evaluation systems. All samples were genotyped using the 670K Affymetrix® Axiom® Equine Genotyping Array, haplotypes were first phased, and haplotype blocks...
Evaluating Protein Enrichment Methods to Improve Biomarker Discovery in Equine Cerebrospinal Fluid. Cerebrospinal fluid (CSF) is a valuable source of biomarkers for neurological diseases, but detection of low-abundance proteins is often masked by highly abundant proteins. Enrichment strategies can enhance proteomic coverage and improve biomarker discovery, yet comparative evaluations of such methods in equine CSF are limited. Objective: This study compared the ProteoMiner Small-Capacity Enrichment Kit and the PreOmics Enrich-iST Kit for their ability to deplete high-abundance proteins and enhance detection of low-abundance proteins relevant to neuropathology. Methods: Equine CSF samples were...
Pedigree Investigation of Polish Sport Horses in Show Jumping: Insights for Global Breeding. The aim of this study was to characterise the pedigree and genetic structure of Polish Sport Horses competing in Grand Prix show jumping events and to assess the implications for international sport horse breeding. Pedigrees of 513 horses were analysed, encompassing a total of 18,836 individuals over a maximum of 16 generations. The completeness and depth of the pedigrees allowed for a reliable estimation of inbreeding coefficients and genetic diversity. The mean inbreeding coefficient was low (0.645%), yet 82% of the horses exhibited some degree of inbreeding. The greatest loss of genetic var...
An overview of the livestock microbiome: sheep, horses, cattle, camels, and chickens. The animal microbiome plays a crucial role in determining the health, productivity, and welfare of livestock species, including sheep, horses, cattle, camel, and chicken. These animal species were selected due to the high consumption of their products in Kazakhstan. Enhancing their productivity, while maintaining the safety and quality of meat and milk derived from them, represents a pressing research priority. This review article includes current research on the composition, diversity, and purposes of the microbiota found within different organ systems of these species. This study focuses on ...
Equine Salmonella in Argentina: Genetic relatedness with humans and other animal species and first detection of serovar Freetown. Salmonellosis in horses can cause severe enteritis with diarrhea, fever, and colic, which is usually severe in foals and hospitalized or immunocompromised animals. Carrier horses may intermittently shed Salmonella, thereby acting as a source of infection for other animals and humans. The aim of this study was to investigate the occurrence and molecular subtyping of Salmonella spp. in horses from Argentina, focusing on potential zoonotic relevance. Only a single isolate (S. Newport) was obtained from fecal samples of 249 clinically healthy horses (2018-2022), indicating a very low carrier detec...
Standing NanoNeedle Arthroscopy of the Distal Interphalangeal Joint for Removal of Osteochondral Fragments of Distal P2 and the Extensor Process in a Horse. In horses, standing arthroscopy offers a valuable alternative to general anesthesia for the reduction of anesthetic-associated risks, and provides improved visualization in joints where access is facilitated by weightbearing. These techniques are particularly advantageous for patients with increased anesthetic risk or financial limitations. To the authors' knowledge, the removal of osteochondral fragments from the distal interphalangeal joint in a standing, sedated horse using small-diameter arthroscopic equipment has not been previously reported. Methods: A 7-year-old American Quarter Horse-T...
Learning in the arena: healthcare students’ lived experience of interprofessional education in equine-assisted services. This qualitative study explored healthcare students' lived experiences during an interprofessional education (IPE) event incorporating equine-assisted services (EAS). Traditional IPE events often rely on classroom settings that may limit interprofessional engagement, collaboration, and application. Utilizing interpretive phenomenological analysis, researchers examined how the equine environment influenced interprofessional learning among fourteen graduate students from diverse healthcare disciplines at a western United States public university. Participants engaged in experiential demonstratio...
Unraveling the Molecular Mechanism of Bider Marking Formation in Dun Mongolian Horses Through Transcriptome Sequencing. (1) Background: The "Bider" marking refers to the symmetrical black stripes distributed on the shoulder blades of Dun Mongolian horses, representing an ancestral trait of significant genetic value. However, the molecular mechanisms underlying its formation remain unclear. This study aims to elucidate the molecular basis of these markings by comparing transcriptomic differences in skin tissues from variously pigmented areas of Mongolian horses' "Bider" patterns. (2) Methods: Using three Dun Mongolian horses as subjects, skin tissue samples were collected from their shoulders (dark-marked and li...
Evaluation and Management of the Horse with Head and Neck Disorders. Recognizing possible causes of equine head and neck problems requires a careful and systematic evaluation. While for some disorders reaching a diagnosis and treatment plan is relatively straightforward, for others this can be a complicated road requiring extensive diagnostic techniques, treatment trials, and management strategies. The ability to determine whether the patient is in a painful state, experiencing functional deficits, or in a combination of pain and dysfunction is critical to developing an effective treatment plan. Frequently, behavioral concerns often associated with pain must be...
Physiological and nutritional adaptation of broodmares during the transition from late pregnancy to early lactation: Digestibility changes and the role of uNDF as an internal marker. Nutritional management of broodmares during late pregnancy and early lactation is essential for maternal health and foal well-being. This study evaluated a targeted dietary adaptation during the transition from late gestation to early lactation, monitored nutrient digestibility, and applied undigested neutral detergent fiber (uNDF) as an intrinsic digestibility marker. A prospective nutritional study was conducted on 11 clinically healthy Trotter broodmares (3 primiparous, 8 multiparous) monitored under standardized conditions. Mares received a forage-based diet with controlled starch intake a...
Atropine induces narrowing of the superior and inferior iridocorneal angle and ciliary cleft in normal horse eyes. To investigate the effects of atropine on the iridocorneal angle (ICA) and ciliary cleft (CC) of normal equine eyes using ultrasound biomicroscopy (UBM). Unassigned: 12 normal adult horses underwent measurement of intraocular pressure (IOP), vertical and horizontal pupil diameter, and UBM of the superior, temporal, inferior, and nasal ICA/CC in both eyes. Measurements were repeated 2 hours following ophthalmic atropine 1% solution application. Measurements of the ICA and CC, including pectinate ligament distance (PLD), CC length (CCL), height of opening distance (HOD), CC area (CCA), and pecti...
Milk fat globule EGF and factor V/VIII domain containing (MFGE8) as a novel player in equine endometrial fibrosis. With increasing age, mares are frequently affected by endometrial fibrosis. Transforming growth factor beta 1 (TGF-β1) promotes fibrosis, while milk fat globule EGF and factor V/VIII domain containing (MFGE8) primarily exerts antifibrotic effects. We used in situ hybridization analysis (ISH) to investigate MFGE8, TGFB1 and its downstream effectors cellular communication network factor 2 (CCN2) and transgelin (TAGLN) in equine endometrial fibrosis. Additionally, transcriptional effects of TGF-β1 and MFGE8 on equine endometrial fibroblasts in vitro were investigated by single cell sequencing. ...
Longitudinal associations between dorsal carpal and third metacarpal bone morphology in Thoroughbred foals during growth. The carpal and third metacarpal (MC3) bones of the equine forelimb undergo morphological adaptation during early growth, influenced by developmental and mechanical factors. However, the longitudinal interactions between dorsal carpal morphology and MC3 structural characteristics have not been fully characterized. Improved understanding of these relationships may help identify morphological indicators associated with bone injury risk before training. Objective: To examine the longitudinal associations between dorsal carpal angular morphology and MC3 diaphyseal parameters in growing Thoroughbred...
Successful Use of Vincristine in a Quarter Horse Gelding with Immune-Mediated Thrombocytopenia. This case reports the successful use of vincristine in a Quarter Horse with presumed immune-mediated thrombocytopenia. A 15-year-old Quarter Horse gelding presented for a pinch skin graft procedure on the left forelimb over the cannon bone. On day 10 of hospitalization, the horse developed a fever (102.6°F, RI: 99-101°F), and severe petechiae of the mucous membranes. A complete blood count (CBC) (Advia 2120i) revealed a severe thrombocytopenia (16,000 platelets/μL, RI:100,000-400,000/μL). Diagnostic testing was negative for Anaplasma phagocytophilum by PCR, Theileria equi and Babesia cabal...
Objective gait analysis methods for assessing movement asymmetry in the equine patient. To demonstrate the uses, data interpretation, and limitations of objective gait analysis methods in equine practice. Unassigned: Teaching and client-owned horses. Unassigned: Informed owner consent was obtained for all animals used in the making of this technical tutorial video. Primary literature relevant to this video was reviewed from January 2016 to January 2026. Images and data were collected from teaching horses and client-owned horses. Unassigned: Objective gait analysis provides accurate and repeatable data on the locomotion of a horse; however, inaccuracies may occur, especially in ca...
Diagnostic Threshold Identification for Equine Laminitis Using Smoothed Receiver Operating Characteristic Analysis. Radiographic measurement parameters play a key role in diagnosing acute and subacute laminitis in horses, with diagnostic thresholds typically derived from empirical receiver operating characteristic (ROC) analysis. However, these methods often produce unstable results, particularly in small or noisy datasets. This study applies nonuniform rational B-spline (NURBS)-based ROC smoothing to radiographic data from laminitic and healthy horses to evaluate its effectiveness in refining diagnostic thresholds. Thresholds are determined using Youden's index based on NURBS-smoothed ROC curves and compar...
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